70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
|
#include "il2cpp-config.h"
|
||
|
|
|
||
|
|
#if (IL2CPP_TARGET_POSIX || IL2CPP_SUPPORT_SOCKETS_POSIX_API) && !RUNTIME_TINY
|
||
|
|
|
||
|
|
#if IL2CPP_TARGET_SWITCH || IL2CPP_TARGET_QNX
|
||
|
|
#include <errno.h>
|
||
|
|
#else
|
||
|
|
#include <sys/errno.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "os/Posix/PosixHelpers.h"
|
||
|
|
|
||
|
|
namespace il2cpp
|
||
|
|
{
|
||
|
|
namespace os
|
||
|
|
{
|
||
|
|
namespace posix
|
||
|
|
{
|
||
|
|
int Poll(pollfd* handles, int numHandles, int timeout)
|
||
|
|
{
|
||
|
|
int32_t ret = 0;
|
||
|
|
time_t start = time(NULL);
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
ret = poll(handles, numHandles, timeout);
|
||
|
|
|
||
|
|
if (timeout > 0 && ret < 0)
|
||
|
|
{
|
||
|
|
const int32_t err = errno;
|
||
|
|
const int32_t sec = time(NULL) - start;
|
||
|
|
|
||
|
|
timeout -= sec * 1000;
|
||
|
|
|
||
|
|
if (timeout < 0)
|
||
|
|
timeout = 0;
|
||
|
|
|
||
|
|
errno = err;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#if IL2CPP_TARGET_LINUX
|
||
|
|
while (ret == -1 && (errno == EINTR || errno == EAGAIN));
|
||
|
|
#else
|
||
|
|
while (ret == -1 && errno == EINTR);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if IL2CPP_TARGET_LINUX
|
||
|
|
// On Linux, socket will report POLLERR if the other end has been closed, in addition to normal POLLHUP
|
||
|
|
// From man page:
|
||
|
|
// POLLERR
|
||
|
|
// Error condition(only returned in revents; ignored in events).
|
||
|
|
// This bit is also set for a file descriptor referring to the
|
||
|
|
// write end of a pipe when the read end has been closed.
|
||
|
|
//
|
||
|
|
// Mac and Windows doesn't do it, so we zero out that bit if POLLHUP is set on Linux to get consistent behaviour
|
||
|
|
for (int i = 0; i < numHandles; i++)
|
||
|
|
{
|
||
|
|
if ((handles[i].revents & POLLERR) && (handles[i].revents & POLLHUP))
|
||
|
|
handles[i].revents &= ~POLLERR & handles[i].events;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // IL2CPP_TARGET_POSIX
|